Pension And Other Post-Retirement Benefit Obligations (Tables)

3 Months Ended

Mar. 31, 2022

Compensation And Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs

The components of the net benefit costs for the Celgar and Peace River defined benefit plans, in aggregate for the three month periods ended March 31, 2022 and 2021 were as follows:

	Three Months Ended March 31,
	2022						2021
	Pension			Other Post- Retirement Benefits			Pension			Other Post- Retirement Benefits
Service cost	$	913		$	49		$	1,025		$	79
Interest cost		965			105			917			102
Expected return on plan assets		(1,478	)		—			(1,174	)		—
Amortization of unrecognized items		62			(178	)		176			(206	)
Net benefit costs	$	462		$	(24	)	$	944		$	(25	)